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cl349@firebug.cl.cam.ac.uk
b93e7f7e8b
Many files:
Make interface to network/block scripts consistent:
- output on stdout is returned to the script caller
- output on stderr is logged at the error level, messages with a '-' prefix
are logged at the debug level and messages with a '*' prefix are logged
at the info level.
Signed-off-by: Christian Limpach <Christian.Limpach@cl.cam.ac.uk>
38 lines
1.2 KiB
Python
38 lines
1.2 KiB
Python
# Copyright (C) 2005 Christian Limpach <Christian.Limpach@cl.cam.ac.uk>
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# os.system() replacement which outputs through the logger
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import popen2
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import select
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import string
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from xen.xend.XendLogging import log
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def runscript(cmd):
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# split after first space, then grab last component of path
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cmdname = "[%s] " % cmd.split()[0].split('/')[-1]
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# run command and grab stdin, stdout and stderr
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cout, cin, cerr = popen2.popen3(cmd)
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# close stdin to get command to terminate if it waits for input
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cin.close()
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# wait for output and process
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p = select.poll()
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p.register(cout)
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p.register(cerr)
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stdout = ""
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while True:
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r = p.poll()
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for (fd, event) in r:
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if event == select.POLLHUP:
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return stdout
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if fd == cout.fileno():
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stdout = stdout + cout.readline()
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if fd == cerr.fileno():
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l = cerr.readline()
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if l[0] == '-':
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log.debug(cmdname + l[1:].rstrip())
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elif l[0] == '*':
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log.info(cmdname + l[1:].rstrip())
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else:
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log.error(cmdname + l.rstrip())
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